Alexa Chung on ‘It’ girl status in new book

Mike Marsland/WireImage

Alexa Chung on the red carpet for GQ’s Men of the Year awards in London in September

It isn’t easy being “It” — let alone defining “It.”

Just ask Alexa Chung, the 29-year-old music journalist, fashion editor, TV presenter and It Girl of the moment.

“ ‘It’ is the be-all, end-all, first place you look,” says Chung, who will release her first book, fittingly titled “It,” on Oct. 29. “Someone enticing both men and women, who personifies charm, who defines an era. The girl of the season, this year’s model, the thing everyone wants at their party.”

Despite not considering herself “It,” Chung has the kinds of chops that make scenesters swoon: Not only does she interview rock stars, she befriends them.

“I’m someone who panics if they feel they’re missing out,” says Chung, who along with her real rocker friends counts 1.1 million Twitter users as followers. “I want to know what the latest joke is, what word everyone’s using, I’m a sucker for current information.”

Her book reads like something between a coffee table hardcover and an intimate diary. It’s loaded with too-cool-for-school quotables poised to become mantras for the next generation of fashionistas.

Even the art has that certain casual, low-key elegance — photos show her living a glamorous life in Polaroid, no less.

Still, Chung finds a way to weave in feminism along with the style tips, selfies, concert descriptions and details about how to create cobwebs from human hair.

Keeping that cool cred intact, Chung insists she’s not dabbling in the literary world for a paycheck.“I don’t think books make money unless you’re J.K. Rowling,” she says. “It’s a personal project. It was written with an ‘I don’t give a f—’ attitude. You either get the joke or you don’t.”

But what made her put down the iPhone and pick up the pen in the first place?

“It was literally as flippant as, ‘I just wanted to,’ ” she says. “There wasn’t a big catalyst behind it, or that I desperately needed to get out the news on how to take a selfie. I genuinely just wanted to do it.”